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Finding the Fourth Proportional to 153,478.51, 211,810.08 and 93,054.94

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Solution

The fourth proportional to 153,478.51, 211,810.08 and 93,054.94 is: 128,421.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,478.51 : 211,810.08 = 93,054.94 : x
  2. Step 2: Convert to fraction form
    153,478.51/211,810.08 = 93,054.94/x
  3. Step 3: Cross multiply
    153,478.51x = 211,810.08 × 93,054.94
  4. Step 4: Simplify right side
    153,478.51x = 19,709,974,285.80
  5. Step 5: Solve for x
    x = 19,709,974,285.80/153,478.51
  6. Step 6: Final answer
    x = 128,421.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.