Home / 126,376,374.40-189,564,561.60-103,418,123.20

Finding the Fourth Proportional to 126,376,374.40, 189,564,561.60 and 103,418,123.20

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Solution

The fourth proportional to 126,376,374.40, 189,564,561.60 and 103,418,123.20 is: 155,127,184.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,376,374.40 : 189,564,561.60 = 103,418,123.20 : x
  2. Step 2: Convert to fraction form
    126,376,374.40/189,564,561.60 = 103,418,123.20/x
  3. Step 3: Cross multiply
    126,376,374.40x = 189,564,561.60 × 103,418,123.20
  4. Step 4: Simplify right side
    126,376,374.40x = 19,604,411,185,902,788
  5. Step 5: Solve for x
    x = 19,604,411,185,902,788/126,376,374.40
  6. Step 6: Final answer
    x = 155,127,184.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.