Home / 91,423.60-137,365.80-58,159.60

Finding the Fourth Proportional to 91,423.60, 137,365.80 and 58,159.60

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Solution

The fourth proportional to 91,423.60, 137,365.80 and 58,159.60 is: 87,385.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,423.60 : 137,365.80 = 58,159.60 : x
  2. Step 2: Convert to fraction form
    91,423.60/137,365.80 = 58,159.60/x
  3. Step 3: Cross multiply
    91,423.60x = 137,365.80 × 58,159.60
  4. Step 4: Simplify right side
    91,423.60x = 7,989,139,981.68
  5. Step 5: Solve for x
    x = 7,989,139,981.68/91,423.60
  6. Step 6: Final answer
    x = 87,385.97

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1.5x scale

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.