Home / 91,728,020.40-137,592,030.60-84,712,999.20

Finding the Fourth Proportional to 91,728,020.40, 137,592,030.60 and 84,712,999.20

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Solution

The fourth proportional to 91,728,020.40, 137,592,030.60 and 84,712,999.20 is: 127,069,498.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,728,020.40 : 137,592,030.60 = 84,712,999.20 : x
  2. Step 2: Convert to fraction form
    91,728,020.40/137,592,030.60 = 84,712,999.20/x
  3. Step 3: Cross multiply
    91,728,020.40x = 137,592,030.60 × 84,712,999.20
  4. Step 4: Simplify right side
    91,728,020.40x = 11,655,833,578,144,176
  5. Step 5: Solve for x
    x = 11,655,833,578,144,176/91,728,020.40
  6. Step 6: Final answer
    x = 127,069,498.80

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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.