Home / 103,541.80-155,312.70-98,730.40

Finding the Fourth Proportional to 103,541.80, 155,312.70 and 98,730.40

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Solution

The fourth proportional to 103,541.80, 155,312.70 and 98,730.40 is: 148,095.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,541.80 : 155,312.70 = 98,730.40 : x
  2. Step 2: Convert to fraction form
    103,541.80/155,312.70 = 98,730.40/x
  3. Step 3: Cross multiply
    103,541.80x = 155,312.70 × 98,730.40
  4. Step 4: Simplify right side
    103,541.80x = 15,334,084,996.08
  5. Step 5: Solve for x
    x = 15,334,084,996.08/103,541.80
  6. Step 6: Final answer
    x = 148,095.60

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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.