Home / 102,439.15-153,681.30-31,362.32

Finding the Fourth Proportional to 102,439.15, 153,681.30 and 31,362.32

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Solution

The fourth proportional to 102,439.15, 153,681.30 and 31,362.32 is: 47,050.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,439.15 : 153,681.30 = 31,362.32 : x
  2. Step 2: Convert to fraction form
    102,439.15/153,681.30 = 31,362.32/x
  3. Step 3: Cross multiply
    102,439.15x = 153,681.30 × 31,362.32
  4. Step 4: Simplify right side
    102,439.15x = 4,819,802,492.82
  5. Step 5: Solve for x
    x = 4,819,802,492.82/102,439.15
  6. Step 6: Final answer
    x = 47,050.40

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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.