Home / 105,153,781.28-157,589,681.01-81,838,677.03

Finding the Fourth Proportional to 105,153,781.28, 157,589,681.01 and 81,838,677.03

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Solution

The fourth proportional to 105,153,781.28, 157,589,681.01 and 81,838,677.03 is: 122,648,285.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,153,781.28 : 157,589,681.01 = 81,838,677.03 : x
  2. Step 2: Convert to fraction form
    105,153,781.28/157,589,681.01 = 81,838,677.03/x
  3. Step 3: Cross multiply
    105,153,781.28x = 157,589,681.01 × 81,838,677.03
  4. Step 4: Simplify right side
    105,153,781.28x = 12,896,931,007,745,008
  5. Step 5: Solve for x
    x = 12,896,931,007,745,008/105,153,781.28
  6. Step 6: Final answer
    x = 122,648,285.69

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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.